Subbass for self-playing organs.



Patented Dec. 23, i902.

C. WARREN.

SUBBASS FOB SELF PLAYING ORGANS.

(Application filed May 10I 1901.' (No Model.) a 2 sheets-sheet 1.'

j l Il L I f ff f L' g ,f

ms mams ramas co.. PHoouTuowAsHmsToN. o. c4

No. -7|6,498. Patented Dec. 23, |902.

C. WARREN.

SUBBASS FOB SELF PLAYING DBGANS.

Application m'ed my 1o, 1901.)

(No Modal.) 2 Sheets-Sheet 2.v

TH: Norms PETERS co wom-uvm., wAsmNGToN. D, c.

UNITED STATES ATENT OFFICE.

CHARLES VARREN, OF GUELPH, CANADA, ASSIGNOR TO THE BELL ORGAN AND PIANOCOMPANY, LIMITED, OF GUELPH, ONTARIO, CANADA, A COR- PORATION.

SUBBASS FOR SELF-PLAYING ORGANS.

SPECIFICATION forming part of Letters Patent No. 716,498, dated December23, 1902.

Serial No. 59,675. (No model.)

To @ZZ whom, it may concern:

Beit known that I, CHARLES VARREN, musical instrument expert, of thecity of Guelph, in the county of Vellington, in the Province of Ontario,Canada, have invented certain new and useful Improvements in Subbassesfor Self-Playing Organs, of which the following is a specification.

My invention relates to that class of pneuxo matic-organs which may beplayed either from the ordinary keyboard or automatically by means of atracker-board and perforated music-sheet; and the object of theinvention is to produce a simple, eiective, compact, and easily-operatedsubbass.

The invention consists in the construction and arrangement of partshereinafter described and particularly pointed out in the claims.

The invention is illustrated in the accompanying drawings, in which-Figure l is a perspective view of an organ with the casing mostly brokenaway, exhibiting the construction and arrangement of z5 mysubbass. Fig.2 isavertical section. Fig. 3 is a detail of the valve which controlsthe communication between the exhaust-chamber and the trunk and theupper pneumaticchamber.

In the drawingslike letters of reference indicate corresponding parts ineach figure.

I shall rst briey describe the upper vacuum-chamber and the diaphragm inconnection therewith and the coactiug parts used 3 5 with thetracker-board.

ctis the vacuum-chamber,extendinglongitudinally and communicating withthe trackerboard b by a tube c, communicating alternately with thediaphragms d in the front .lo and back walls of the Vacuum-chamber.

e represents valves covering the openings e and connecting the chamberct with the outer air, being adapted to he operated by the diaphragm din the usual Well-known manner.

f represents the pneu matics, which are connected to the keys by cordsg, and e2 represents passage-ways leading from the opening e to thepneumatics.

c/ represents passage-ways leading from the 5o tracker to the spacebehind the diaphragm.

r is the relief-Valve, which covers an opening r in the trunk t',leading from the exhaustchamber B to the vacuum-chamber a.

o is the opening communicating between the exhaust-chamber and the trunkand normally covered by the valve q, which has a pin q', which abuts theinner side of the relief-valve 1^. The slide q is connected bythe rod q2to one of the stops of the organ.

e3 represents branch passage-ways leading 6o through the platesupporting the pneumaticchamber to the supplemental tubes C, whichextend through the top of the subbass-casing D and communicate with thepneumatics E. Each pneumatic E is connected by a rod E to a pallet F,which extends over the corresponding chamber G of the reed-box G. Eachchamber contains one reed g.

H is the mute iiap, which covers an opening lt, being held against thecasing by a 7o springt. The mute flap H is suitably hinged at the top,as indicated, and has an upward extension h2, which is connected by therod h3 to the double pivoted arm h4, which is connected by suitableconnections to the stop I-I. (See Fig. 2.)

Vhen it is desired to operate the subbass, the stop H must be pulledout, so as to throw the mute tia-p outwardly and uncover the opening h.It will now be seen that imme- 8o diately any of the openings in themusic-sheet uncover the corresponding openings in the tracker-board thecorresponding tubes C will be thrown into communication with the air,and thereby operate the diaphragm d, as is commonly known, thuscollapsing the pneumatic f and necessarily at the same time collapsing,through the passage-Way e3 and tube C, the pneumatic E in thesubbass-chamber, thus raising the corresponding pallets and 9o, causingthe corresponding reeds in the reedbox G2 to speak. Y

It will of course be understood that the relief-valve r must be closedand the opening o opened, so that the organ may be automatically playedby the tracker-board, and necessarily when the relief-valve r is thrownopen and the opening is closed by its valve q that the pueumaticsoperated through the vacuumchamber ct will be inoperative andnecessarily Ico the subbass, which is connected therewith by thepassage-ways e and C. It will also be uuderstood that when thepneumatics are operating in connection With the Vacuum-chamber a. thepneumatics will not be operating in the subbass unless the mute flap Hisopen.

What I claim as my invention isl. In pneumatic-organs, the combinationwith the upper and lower vacuum-chambers, diaphragms, tubes and trackerboard and pneu matics coacting with same, of a subbasschamber having amute opening and pneumatics located therein beneath the top of the same,tubes connecting such pneumatics with the passage-ways leading to theupper portion of the vacuum-chamber, the reed-box and reeds located inchambers therein, such reeds extending downwardly through the main orlower vacuum-chamber into the exhaust-bellows and the pallets extendingover the top of the reed-box chambers and connections between thepallets and pneumatics as specified.

2. In a device ofthe class described, in combination the mainvacuum-chamber extending completely across the instrument, asupplemental chamber extending portion of the way across the instrument,and located directly upon the top or sound board ofthe mainvacuum-chamber and provided with au inclined top extending downwardlyfrom back tofront, whereby freedom of movement is given to the extendedkeys, as specified.

3. In a pneumatic-organ, the combination with the upper vacuum-chambercommunieating with the main vacuum-chamber, the diaphragms, tubes andtracker-board and pneumatics coacting with such upper chamber, of asupplemental chamber and pneumatics located therein, passage-ways andtubes extending from the upper vacuumchamber directly to the top of thepneumatics in the supplemental chamber, the reedchamber and reedsextending downwardly from the supplemental chamber directly underneaththe pneumatics, the pallets covering the reed-chambers, the connectionsbetween the pallets and pneumatics and the opening in the wall of thesupplemental chamber and the mute flap covering the same as specified.

B. BOYD, L. TRIMBLE.

